ARC Energy Ltd chairman David Griffiths has acquired another feather in his burgeoning directorship hat, having been appointed chairman of Advanced Nanotechnology Ltd last week. The recently appointed non-executive director of Automotive Holdings Group Ltd replaces long-serving chairman, Harold Clough, who will remain on the board as a director and will assume the chairmanship of the company’s audit committee, vacated by Mr Griffiths. A director of Advanced Nano since 2003, Mr Griffiths holds a number of other directorships, including chairman of MIS promoter Great Southern Ltd, and was previously a divisional director of Macquarie Bank.